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160_Physics ProblemsTechnical Physics

160_Physics ProblemsTechnical Physics - 162 Circular Motion...

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162 Circular Motion and Other Applications of Newton’s Laws P6.8 a v r g g == F H G I K J = 2 1 1000 2 86 5 61 0 1 9 0966 . . . km h m .80 m s h 3600 s m 1 km 2 bg ej e j P6.9 Tm g cos . . . 500 800 980 °= = kg m s 2 (a) T = 787 N: Ti j =+ 68 6 784 . ±± N N af a f (b) a c sin . : a c = 0857 . m s 2 toward the center of the circle. The length of the wire is unnecessary information. We could, on the other hand, use it to find the radius of the circle, the speed of the bob, and the period of the motion. FIG. P6.9 P6.10 (b) v 235 653 m 36.0 s ms . The radius is given by
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